CN218121045U - Vortex street sensor integrated with temperature sensor - Google Patents
Vortex street sensor integrated with temperature sensor Download PDFInfo
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- CN218121045U CN218121045U CN202221424239.8U CN202221424239U CN218121045U CN 218121045 U CN218121045 U CN 218121045U CN 202221424239 U CN202221424239 U CN 202221424239U CN 218121045 U CN218121045 U CN 218121045U
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- temperature sensor
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- neutral axis
- sensor
- vortex street
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Abstract
The utility model discloses an integrated temperature sensor's vortex street sensor, including neutral axle subassembly and shell, the neutral axle includes front and back, left and right sides and bottom surface, the front and back of neutral axle is installed piezoelectric crystal, and piezoelectric crystal's lead wire is located the front and back, temperature sensor is installed to the bottom surface of neutral axle, temperature sensor's lead wire is drawn forth from the left and right sides of neutral axle; the piezoelectric crystal, the neutral axis and the temperature sensor are encapsulated in a housing. The utility model integrates the temperature sensor to the tail end of the neutral shaft, so that the neutral shaft is immersed in the fluid, thereby detecting the temperature of the fluid in real time; meanwhile, the temperature sensor is small in size and integrated to the tail end of the neutral axis, so that the original flow detection function of the vortex street sensor is not influenced.
Description
Technical Field
The utility model relates to a vortex street sensor technical field specifically is an integrated temperature sensor's vortex street sensor.
Background
The vortex shedding flowmeter is mainly used for measuring the flow of fluid media in a pipeline, such as various media of gas, liquid, steam and the like. The vortex shedding flowmeter is characterized by small pressure loss, wide measuring range, high precision, no movable parts, high reliability and small maintenance amount. However, in the case of gaseous fluid media, it is necessary to know the temperature and pressure of the fluid to be able to accurately measure the mass flow of the medium.
Conventionally, the temperature and pressure are acquired by separate sensors, which the user needs to install on the pipe. This approach is costly and complicated to install. Besides the vortex street sensor, the pipeline is also required to be provided with an independent temperature sensor and an independent pressure sensor. Each sensor needs broken wall installation, installation cost is high, and it is very inconvenient to use and maintain, therefore, the vortex shedding flowmeter of integration is pressed to current application number CN201420144326.7 design temperature. The utility model discloses an in, with temperature sensor and pressure sensor with the mode of integration, make the vortex shedding flowmeter in, nevertheless its integrated level is not high, and temperature sensor and pressure sensor still are independent parts.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an integrated temperature sensor's vortex street sensor to solve the problem among the prior art.
In order to achieve the above purpose, the utility model provides a following technical scheme: a vortex street sensor integrated with a temperature sensor comprises a neutral shaft and a shell, wherein the neutral shaft comprises a front surface, a rear surface, a left side surface, a right side surface and a bottom surface, piezoelectric crystals are arranged on the front surface and the rear surface of the neutral shaft, lead wires of the piezoelectric crystals are positioned on the front surface and the rear surface, the bottom surface of the neutral shaft is provided with the temperature sensor, and the lead wires of the temperature sensor are led out from the left side surface and the right side surface of the neutral shaft; the piezoelectric crystal, the neutral axis and the temperature sensor are encapsulated in a housing.
Preferably, the piezoelectric crystals on the front and rear faces of the neutral axis are provided in one or two pairs.
Preferably, the temperature sensor is packaged in the housing before ensuring that the temperature sensor is positioned to be immersed in the fluid.
Preferably, the bottom surface of the neutral axis is provided with a groove for embedding and mounting the temperature sensor or the temperature sensor is fixed on the bottom surface of the neutral axis in an adhesive manner.
Preferably, the left side surface and the right side surface of the neutral axis are planes or cambered surfaces.
Preferably, the temperature sensor also comprises a fixing plate, the number of the shells is two, the two shells are fixed on the fixing plate, and piezoelectric crystals, neutral axes and temperature sensors are packaged in the two shells.
Compared with the prior art, the beneficial effects of the utility model are that: integrating a temperature sensor at the tail end of the neutral shaft to enable the neutral shaft to be immersed in the fluid, so that the temperature of the fluid can be detected in real time; meanwhile, the temperature sensor has small volume and is integrated at the tail end of the neutral axis, so that the original flow detection function of the vortex street sensor is not influenced;
the shell is of a hollow structure, the piezoelectric crystal is fixed on a neutral axis, the neutral axis with the piezoelectric body is inserted into the hollow section of the shell, and then curing is carried out integrally by using curing glue; through improving the shape of neutral axis or lead wire layout mode, be fixed in neutral axis tail end and from the side lead wire with temperature sensor to make piezoelectricity passageway and temperature channel independently make respectively, greatly reduced the technical degree of difficulty and the cost of temperature sensor integration encapsulation.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a pair of piezoelectric crystals of the present invention showing a neutral shaft assembly;
FIG. 2 is a schematic structural diagram of a pair of piezoelectric crystal housings of the present invention;
fig. 3 is a schematic structural view of a neutral shaft assembly when two pairs of piezoelectric crystals are provided in the present invention;
fig. 4 is a schematic structural diagram of a shell of two pairs of piezoelectric crystals according to the present invention;
FIG. 5 is a schematic structural view of the present invention with two housings;
FIG. 6 is a schematic structural view of the neutral axis of the present invention with the left and right sides being flat;
fig. 7 is a schematic structural view of the neutral axis of the present invention, in which the left and right sides are cambered surfaces.
In the figure: 1. a piezoelectric crystal; 2. a neutral axis; 3. a temperature sensor; 4. a housing; 5. a fixing plate; 21. the front and back sides; 22. left and right side faces; 23. a bottom surface.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-7, in an embodiment of the present invention, a vortex street sensor integrated with a temperature sensor includes a neutral axis 2 and a housing 4, where the neutral axis 2 includes a front and a back 21, a left and a right side 22, and a bottom 23, the front and the back 21 of the neutral axis 2 are mounted with piezoelectric crystals 1, leads of the piezoelectric crystals 1 are located on the front and the back 21, the bottom 23 of the neutral axis 2 is mounted with a temperature sensor 3, and the leads of the temperature sensor 3 are led out from the left and the right side 22 of the neutral axis 2; the piezoelectric crystal 1, the neutral axis 2 and the temperature sensor 3 are packaged in a shell 4; one pair or two pairs of piezoelectric crystals 1 on the front and back surfaces 21 of the neutral axis 2 are arranged; the temperature sensor 3 is required to be ensured to be immersed in the fluid after being packaged in the shell; the bottom surface 23 of the neutral axis 2 is provided with a groove for embedding and mounting the temperature sensor 3 or the temperature sensor 3 is fixed on the bottom surface 23 of the neutral axis 2 in an adhesive manner; the left side surface 22 and the right side surface 22 of the neutral axis 2 are planes or cambered surfaces; still include fixed plate 5, shell 4 is provided with two altogether, two shell 4 all fixes on fixed plate 5, two all encapsulate piezoelectric crystal 1, neutral axis 2 and temperature sensor 3 in the shell 4.
The shell 4 is a hollow structure, the piezoelectric crystal 1 is fixed on the neutral axis 2, the neutral axis 2 with the piezoelectric body 1 is inserted into the hollow section of the shell 4, and then the curing glue is used for integral curing; the temperature sensor 3 is fixed at the tail end of the neutral shaft 2 and leads from the side surface by improving the shape of the neutral shaft 2 or the lead layout mode, so that the piezoelectric channel and the temperature channel can be manufactured independently, and the technical difficulty and the cost of the integrated packaging of the temperature sensor are greatly reduced;
as shown in fig. 1 and 2, the housing 4 corresponds to a flow detection function, a temperature sensor is integrated on the bottom surface 23 of the neutral axis 2, then a group of piezoelectric crystals 1 is fixed on the neutral axis 2, and finally the piezoelectric crystals are integrally packaged, wherein two groups of leads correspond to flow detection and temperature measurement respectively.
As shown in fig. 3 and 4, the housing 4 has two functions of flow detection and vibration detection, a temperature sensor is integrated on the bottom surface 23 of the neutral axis, two sets of piezoelectric crystals 1 are fixed on the neutral axis 2, and finally, the piezoelectric crystals are integrally packaged, the number of leads is three, one set corresponds to flow detection, one set corresponds to vibration detection, and the other set corresponds to temperature detection.
As shown in fig. 5, the housing 4 has two neutral axes 2 corresponding to the flow detection and vibration detection functions, and the temperature detection is only integrated into one of the neutral axes 2, or the two neutral axes 2 can be integrated with the temperature sensor 3, and then the piezoelectric crystals 1 are respectively fixed on the two neutral axes 2, and finally packaged; the neutral axis is as shown in figure 1.
The overall outline of the neutral axis 2 as shown in fig. 6 and 7 can be in the shape of a flat cuboid as shown in fig. 6, or a group of long cylindrical rods with opposite side planes as shown in fig. 7, and flanges on the shell 4 as shown in fig. 2, 4 and 5 are cut out, mainly play a role in fixing, and the shape of the shell can be changed; the side of the neutral shaft can be provided with a groove, and the bottom can be provided with a hole or a groove.
The utility model discloses a theory of operation is: the temperature sensor 3 is integrated at the tail end of the neutral shaft 2 and is immersed in the fluid, so that the temperature of the fluid can be detected in real time; meanwhile, the temperature sensor 3 is small in size and integrated to the tail end of the neutral shaft 2, so that the original flow detection function of the vortex street sensor is not influenced.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A vortex street sensor integrated with a temperature sensor comprises a neutral shaft (2) and a shell (4), and is characterized in that: the piezoelectric ceramic temperature sensor is characterized in that the neutral axis (2) comprises a front surface and a rear surface (21), a left side surface and a right side surface (22) and a bottom surface (23), piezoelectric crystals (1) are mounted on the front surface and the rear surface (21) of the neutral axis (2), leads of the piezoelectric crystals (1) are located on the front surface and the rear surface (21), a temperature sensor (3) is mounted on the bottom surface (23) of the neutral axis (2), and leads of the temperature sensor (3) are led out from the left side surface and the right side surface (22) of the neutral axis (2); the piezoelectric crystal (1), the neutral axis (2) and the temperature sensor (3) are packaged in the shell (4).
2. The vortex street sensor integrated with a temperature sensor according to claim 1, wherein: one pair or two pairs of piezoelectric crystals (1) on the front and back surfaces (21) of the neutral axis (2) are arranged.
3. The vortex street sensor integrated with a temperature sensor according to claim 1, wherein: the temperature sensor (3) is packaged in the shell, and then the position of the temperature sensor (3) needs to be ensured to be immersed in the fluid.
4. A temperature sensor integrated vortex street sensor according to claim 1, 2 or 3 wherein: the bottom surface (23) of the neutral axis (2) is provided with a groove for embedding and installing the temperature sensor (3) or the temperature sensor (3) is fixed on the bottom surface (23) of the neutral axis (2) in an adhesive mode.
5. The vortex street sensor integrated with a temperature sensor according to claim 1, wherein: the left side surface (22) and the right side surface (22) of the neutral axis (2) are planes or cambered surfaces.
6. The vortex street sensor integrated with a temperature sensor according to claim 1, wherein: still include fixed plate (5), shell (4) are provided with two altogether, two shell (4) are all fixed on fixed plate (5), two all packaged with piezocrystal (1), neutral axis (2) and temperature sensor (3) in shell (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221424239.8U CN218121045U (en) | 2022-06-09 | 2022-06-09 | Vortex street sensor integrated with temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221424239.8U CN218121045U (en) | 2022-06-09 | 2022-06-09 | Vortex street sensor integrated with temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218121045U true CN218121045U (en) | 2022-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221424239.8U Active CN218121045U (en) | 2022-06-09 | 2022-06-09 | Vortex street sensor integrated with temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218121045U (en) |
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2022
- 2022-06-09 CN CN202221424239.8U patent/CN218121045U/en active Active
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